A baker uses the equation y= 3.5x to find the number of cups ,y, of milk he needs to make a number ,x, of tres leches cakes. What is the constant of proportionality between y and x?

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Answer:

Step-by-step explanation

Equation: y=3.5x

Constant of proportionality:

The constant ratio of one variable quantity to another to which it is proportional.

Answer: 3.5

The reason is for 3.5 cakes you need this amount of milk.